Printing apparatus, method for controlling same, and storage medium

Abstract

The present printing apparatus comprises a reception unit that receives print job identification information for identifying a print job from an information processing apparatus and print data for executing a print job, and a printing unit that executes printing according to print data received by the reception unit. Also, the printing apparatus manages print job information including the print job identification information and the number of pages already printed in a print job, discards data about pages to be printed when the page number to be printed in executing printing by the printing unit is at or below the number of pages already printed in a managed print job, and causes the printing unit to execute printing when the page number to be printed exceeds the number of pages already printed.

What is claimed is: 
     
         1 . A printing apparatus capable of communicating with an information processing apparatus, comprising:
 a reception unit configured to receive print job identification information for identifying a print job from the information processing apparatus, and print data for executing a print job;   a printing unit configured to execute printing according to print data received by the reception unit;   a management unit configured to manage print job information including the print job identification information and the number of pages already printed in a print job; and   a printing control unit configured to discard data about pages to be printed when the page number to be printed in executing printing by the printing unit is at or below the number of pages already printed in a print job managed by the management unit, and causes the printing unit to execute printing when said page number to be printed exceeds said number of pages already printed.   
     
     
         2 . The printing apparatus according to  claim 1 ,
 wherein the management unit comprises an update unit configured to update the number of pages already printed managed by the management unit upon notification indicating normal termination of printing from the printing unit after the printing control unit has caused the printing unit to execute printing of the pages to be printed.   
     
     
         3 . The printing apparatus according to  claim 1 ,
 wherein the management unit comprises a deletion unit configured to delete the corresponding print job information when execution of a print job ends.   
     
     
         4 . The printing apparatus according to  claim 1 ,
 wherein the print job information further includes a port name indicating the name of the port that received information related to the print job, and   if the received print job identification information and the port name where said print job identification information was received match already-managed information, the management unit discards said print job identification information.   
     
     
         5 . The printing apparatus according to  claim 4 ,
 wherein the print job identification information includes a job ID for identifying a print job, a print job name indicating the name of a print job, a user name indicating the name of the user who directs the execution of a print job, a job registration time indicating the time when a print job was registered, and a computer name indicating the name of the information processing apparatus that sent a print job, and   if only the job ID and the computer name out of the received print job identification information match already-managed information, and the port name matches already-managed information, the management unit deletes the matching already-managed print job information, and produces and newly manages print job information including the received print job identification information.   
     
     
         6 . The printing apparatus according to  claim 1 ,
 wherein the management unit further deletes the oldest print job information when a specific quantity of print job information that can be managed is exceeded in newly producing and managing the print job information.   
     
     
         7 . A method for controlling a printing apparatus comprising a reception unit that receives print job identification information for identifying a print job from the information processing apparatus and print data for executing a print job, and a printing unit that executes printing according to print data received by the reception unit, the method comprising:
 managing, by a management unit, print job information including the print job identification information and the number of pages already printed in a print job; and   having a printing control unit discard data about pages to be printed when the page number to be printed in executing printing by the printing unit is at or below the number of pages already printed in a print job managed in the managing step, and cause the printing unit to execute printing when said page number to be printed exceeds said number of pages already printed.   
     
     
         8 . A computer-readable storage medium storing a computer program for causing a computer to execute the steps in the method for controlling a printing apparatus according to  claim 7 .